Science

Tuesday, 4 August 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Brain
There are approximately 100 billion neurons in the human brain.
Most neurons are found in the cerebellum, ranging from 55 to 70 billion. The cerebral cortex, or what makes us intelligent beings, is made up of 14 to 16 billion neurons.
Graphene
Graphene is an allotrope of carbon consisting of a single layer of atoms arranged in a two-dimensional honeycomb nanostructure (an intermediate-sized structure between microscopic and molecular structures).
Allotropy is the phenomenon of the existence of different varieties of the same chemical element in ...
Mushrooms
Mushrooms are some of the oldest inhabitants of the Earth.
Latest evidence suggests that the first mushrooms evolved on Earth between 715 and 810 million years ago.
Tears
The frequency of crying depends on human nature.
There is no equation to calculate how often people cry. It depends on various factors, such as emoti ...
Amber
It has been used in jewelry since 13,000 BC.
Moon
The Moon's core consists of a solid part made mainly of iron and a semi-liquid part surrounding it.
The solid core has a diameter of 240 km and the semi-liquid core has a diameter of about 330 km.
Tears
Babies can cry for up to three hours a day.
It is their way of communicating their needs, such as hunger, tiredness, or discomfort.
Deimos
Deimos was discovered by American astronomer Asaph Hall on August 12, 1877, through a telescope at the US Naval Observatory.
It was not discovered accidentally, the astronomer conducted observations precisely to find the planet's natural satellites.
Aurora
In Finnish, the aurora is referred to as "revontulet, " which means "fox fire".
The name comes from the legend of an arctic fox that ran north, spreading its tail sparks of fire shining in the moonlight.
NASA
NASA logo is nicknamed the “meatball.”
It was designed by James Modarelli in 1959.